21986864

素因数分解:

$2^4\times {\mathrm{257}}^1\times {\mathrm{5347}}^1$

素因数の和:5612

約数の個数: 20

約数和(自身を含む): 42773304

約数和(自身を除く): 20786440

約数列:

[1, 2, 4, 8, 16, 257, 514, 1028, 2056, 4112, 5347, 10694, 21388, 42776, 85552, 1374179, 2748358, 5496716, 10993432, 21986864]

約数ペア:

[(1, 21986864), (2, 10993432), (4, 5496716), (8, 2748358), (16, 1374179), (257, 85552), (514, 42776), (1028, 21388), (2056, 10694), (4112, 5347)]